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Water-based anionic polyurethane emulsion as well as preparation method and application

A technology of polyurethane emulsion and anion, which is applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive additives, etc., and can solve problems such as poor bonding strength, poor blending performance, and poor high temperature resistance , to achieve the effect of excellent heat resistance

Inactive Publication Date: 2017-11-17
SHANDONG TIANQING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of water-based anionic polyurethane emulsion and its preparation method and application, overcome the high cost, unstable viscosity, poor high temperature resistance and bond strength existing in the prior art. Poor, poor blending performance and other defects

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  • Water-based anionic polyurethane emulsion as well as preparation method and application

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Embodiment 1

[0051] 1. Preparation of water-based anionic polyurethane emulsion

[0052] Raw material components: 10 parts of pentaerythritol (PE), 39.5 parts of dimethylolpropionic acid A (DMPA), 40 parts of N,N-dimethylformamide (DMF), 0.005 parts of p-toluenesulfonic acid, 200 parts of polyols , 35 parts of TDI, 0.03 parts of stannous octoate, 10 parts of dimethylolpropionic acid B, 5 parts of 1,4-butanediol, 50 parts of N-ethylpyrrolidone, 7.5 parts of triethylamine, 270 parts of deionized water;

[0053] Method: (1) Add 10 parts of pentaerythritol (PE) and 39.5 parts of dimethylolpropionic acid A (DMPA) into a four-neck flask equipped with mechanical stirring, thermometer and condenser, and use 40 parts of N,N-dimethylol Dimethyl formamide (DMF) was used as a solvent, adding 0.005 parts of p-toluenesulfonic acid, slowly raising the temperature to 130°C, and reacting at a constant temperature for 2.5h until the acid value was less than 20mg KOH / g, vacuuming for 1h, removing DMF, and ob...

Embodiment 2

[0063] 1. Preparation of water-based anionic polyurethane emulsion

[0064] Raw material components: 10 parts of pentaerythritol (PE), 49.5 parts of dimethylolpropionic acid A (DMPA), 60 parts of N,N-dimethylformamide (DMF), 0.006 parts of p-toluenesulfonic acid, 245 parts of polyols , TDI 54 parts, stannous octoate 0.04 parts, dimethylolpropionic acid B12.5 parts, 1,6-hexanediol 7 parts, N-ethylpyrrolidone 56 parts, dimethylethanolamine 8.3 parts, deionized water 450 copies;

[0065] Preparation method: (1) Add 10 parts of pentaerythritol (PE) and 49.5 parts of dimethylolpropionic acid A (DMPA) into a four-neck flask equipped with mechanical stirring, thermometer and condenser, and use 60 parts of N,N-di Add methylformamide (DMF) as solvent, add 0.006 parts of p-toluenesulfonic acid, slowly raise the temperature to 135°C, and react at constant temperature for 3 hours until the acid value is less than 20mg KOH / g, vacuumize for 1 hour, remove DMF, and obtain hyperbranched poly...

Embodiment 3

[0074] 1. Preparation of water-based anionic polyurethane emulsion

[0075] Raw material components: 10 parts of pentaerythritol (PE), 59 parts of dimethylolpropionic acid A (DMPA), 70 parts of N,N-dimethylformamide (DMF), 0.009 parts of p-toluenesulfonic acid, 300 parts of polyol , TDI 70 parts, stannous octoate 0.05 parts, dimethylolpropionic acid B16.5 parts, 1,6-hexanediol 10 parts, N-ethylpyrrolidone 60 parts, triethylamine 12.5 parts, deionized water 457 parts share;

[0076] The preparation method is as follows: (1) Add 10 parts of pentaerythritol (PE) and 59 parts of dimethylolpropionic acid A (DMPA) into a four-necked flask equipped with mechanical stirring, a thermometer and a condenser, and use 70 parts of N,N- Dimethylformamide (DMF) was used as a solvent, adding 0.006 parts of p-toluenesulfonic acid, slowly raising the temperature to 145°C, and reacting at a constant temperature for 3 hours until the acid value was less than 20mg KOH / g, vacuuming for 1 hour, and ...

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Abstract

The invention discloses a water-based anionic polyurethane emulsion as well as a preparation method and an application and belongs to the field of fine polymer materials. The water-based anionic polyurethane emulsion is prepared from raw material components in parts by weight as follows: 10 parts of pentaerythritol, 39.5-79 parts of dimethylolpropionic acid A, 40-90 parts of N,N-dimethylformamide, 0.005-0.09 parts of p-toluenesulfonic acid, 200-350 parts of polyhydric alcohols, 35-80 parts of isocyanate, 0.03-0.05 parts of a catalyst, 5-10 parts of a micromolecular chain extender, 10-18 parts of dimethylolpropionic acid B, 50-80 parts of N-hydroxyethyl pyrrolidone, 6.7-13.5 parts of a neutralizer and 270-480 parts of deionized water. The solid content of the water-based anionic polyurethane emulsion is 40%-50%, and water-based vacuum plastic suction adhesive has excellent heat resistance, weather resistance, low-temperature viscosity stability, adhesive strength and the like when the emulsion is used for the water-based vacuum plastic suction adhesive.

Description

technical field [0001] The invention relates to the field of fine polymer materials, in particular to a water-based anionic polyurethane emulsion and its preparation method and application. Background technique [0002] Water-based polyurethane emulsion can be used alone as a vacuum plastic, or it can be compounded with ethylene-vinyl acetate emulsion to form a vacuum plastic, but so far it is mainly compounded. Vacuum blister technology is widely used in the manufacture of computer desks, dressing tables, cabinets, door panels and furniture. The general use process of vacuum plastic absorbing plastic: put the PVC film close to the sprayed medium density fiberboard during the heating and softening process, use vacuum to remove the air between the PVC film and the medium density fiberboard, and rely on atmospheric pressure to make the PVC film stick tightly on it. On MDF, this process is called vacuum blistering. The biggest feature of this process is that it does not need ...

Claims

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Application Information

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IPC IPC(8): C08G18/42C08G18/76C08G18/12C08G18/66C08G18/32C08G18/34C08G83/00C09J123/08C09J11/08C09J11/06
CPCC08G18/4286C08G18/0823C08G18/12C08G18/6659C08G18/7614C08G83/005C08L2201/08C08L2205/02C08L2205/035C09J11/06C09J11/08C09J123/0853C08L75/06C08L75/04C08L71/02C08G18/3206C08G18/348
Inventor 刘娅琳宁继鑫闫克辉马金明陈建栋王铁森陈玉国苗吉宾郑萍张少尉
Owner SHANDONG TIANQING TECH DEV
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